Need help please!

[AlexDorian]

hi! so ive bought a new computer i7-7700 with gigabyte gtx 1070 windforce 8 gddr5 256 mb, 16 ddr 2400hz gl 14 3tb 64mb seagate barracuda 7200 rpm , asrock z270 extreme4 , and fortron 700w m modular source but the issue is on win 10 i lose signal on 4k ress even if im usign the desk res on 1920 x 1080 in games when i alt tab the signal is lost and it comes back after some time or more alt tabbig or even pulling the hdmi 2.0 from the graphic card's hdmi socket. im using an LG 40uh630v uhd tv. on 8.1 i didnt have that issue on desk settings easy 4k res no signal loss but i didnt get to test it on games... any idea what the heck its going on as in faulty software or the card itself or even perhaps the cable but i doubt it is the problem. i cant figure it on my own and yes i have the latest drivers for everything installed...

 

[hang-the-9]

Does not seem like it's an issue, it's just trying to swap resolutions from 4k to 1080. If you keep the resolution the same for both game and desktop use it's fine correct?

 

[AlexDorian]

yes it same but only for the full hd whatever is close to 4k signal lose and i need to remove and put the cable back in the hdmi slot which to be honest isnt normal and everytime i restart the win on that resolution it always losses signal

 

[AlexDorian]

So again basically if i change to 4k its losing signal which its not supposed to be doing... thats why ive asked cuz maybe there's someone who had this issue and figured it out

 

[AlexDorian]

and im not wanting to play a game at 1920x1080 or have everything at full hd i just want to know what could be wrong?